公开(公告)号：DE602004024087D1

公开(公告)日：2009-12-24

申请号：DE602004024087

申请日：2004-08-24

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： WAFFENSCHMIDT ,  DUERBAUM THOMAS

IPC: H01F17/00 ,  H01F1/37 ,  H01F27/28 ,  H01F41/04 ,  H05K1/16

Abstract: Conventional transformers with fractional turns have pre-manufactured cores usually with a complicated structure. According to the present invention, a method is provided of manufacturing a planar transformer where a ferrite polymer compound is laminated to a PCB for forming the core of the transformer. Advantageously, this may allow for the provision of a cheap and robust transformer.